./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 046473fab28f9389ecc0d44699a462777c1ef1278031560923e70e589643d659 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:00:59,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:00:59,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:00:59,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:00:59,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:00:59,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:00:59,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:00:59,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:00:59,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:00:59,252 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:00:59,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:00:59,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:00:59,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:00:59,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:00:59,255 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:00:59,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:00:59,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:00:59,257 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:00:59,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:00:59,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:00:59,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:00:59,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:00:59,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:00:59,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:00:59,264 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:00:59,264 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:00:59,265 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:00:59,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:00:59,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:00:59,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:00:59,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:00:59,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:00:59,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:00:59,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:00:59,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:00:59,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:00:59,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:00:59,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:00:59,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:00:59,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:00:59,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:00:59,282 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:00:59,282 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 046473fab28f9389ecc0d44699a462777c1ef1278031560923e70e589643d659 [2023-11-29 07:00:59,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:00:59,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:00:59,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:00:59,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:00:59,514 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:00:59,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i [2023-11-29 07:01:02,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:01:02,532 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:01:02,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i [2023-11-29 07:01:02,541 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/data/7fb76e47f/8ae9fe682f3243d3afccc509e63062db/FLAG7609359c1 [2023-11-29 07:01:02,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/data/7fb76e47f/8ae9fe682f3243d3afccc509e63062db [2023-11-29 07:01:02,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:01:02,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:01:02,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:02,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:01:02,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:01:02,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6822ab0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02, skipping insertion in model container [2023-11-29 07:01:02,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,600 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:01:02,719 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i[919,932] [2023-11-29 07:01:02,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:02,809 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:01:02,818 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i[919,932] [2023-11-29 07:01:02,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:02,881 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:01:02,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02 WrapperNode [2023-11-29 07:01:02,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:02,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:02,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:01:02,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:01:02,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,951 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 333 [2023-11-29 07:01:02,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:02,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:01:02,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:01:02,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:01:02,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,988 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 07:01:02,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:02,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:03,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:03,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:03,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:03,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:03,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:01:03,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:01:03,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:01:03,027 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:01:03,028 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (1/1) ... [2023-11-29 07:01:03,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:01:03,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:03,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:01:03,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:01:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:01:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 07:01:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 07:01:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:01:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:01:03,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:01:03,197 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:01:03,199 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:01:03,686 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:01:03,717 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:01:03,717 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:01:03,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:03 BoogieIcfgContainer [2023-11-29 07:01:03,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:01:03,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:01:03,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:01:03,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:01:03,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:01:02" (1/3) ... [2023-11-29 07:01:03,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ababe10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:03, skipping insertion in model container [2023-11-29 07:01:03,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:02" (2/3) ... [2023-11-29 07:01:03,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ababe10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:03, skipping insertion in model container [2023-11-29 07:01:03,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:03" (3/3) ... [2023-11-29 07:01:03,728 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-10.i [2023-11-29 07:01:03,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:01:03,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:01:03,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:01:03,803 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24ee1fe0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:01:03,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:01:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 83 states have (on average 1.4819277108433735) internal successors, (123), 84 states have internal predecessors, (123), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 07:01:03,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-29 07:01:03,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:01:03,826 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:03,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:01:03,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1217600265, now seen corresponding path program 1 times [2023-11-29 07:01:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964045877] [2023-11-29 07:01:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:04,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964045877] [2023-11-29 07:01:04,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 07:01:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368716993] [2023-11-29 07:01:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:04,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:04,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:04,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:04,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:01:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:04,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 07:01:04,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2023-11-29 07:01:04,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368716993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:04,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:04,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:01:04,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130605313] [2023-11-29 07:01:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:01:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:01:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:01:04,444 INFO L87 Difference]: Start difference. First operand has 134 states, 83 states have (on average 1.4819277108433735) internal successors, (123), 84 states have internal predecessors, (123), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-11-29 07:01:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:01:04,495 INFO L93 Difference]: Finished difference Result 265 states and 484 transitions. [2023-11-29 07:01:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:01:04,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 292 [2023-11-29 07:01:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:01:04,508 INFO L225 Difference]: With dead ends: 265 [2023-11-29 07:01:04,508 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 07:01:04,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:01:04,517 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:01:04,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:01:04,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 07:01:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-29 07:01:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 82 states have internal predecessors, (118), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 07:01:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 214 transitions. [2023-11-29 07:01:04,579 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 214 transitions. Word has length 292 [2023-11-29 07:01:04,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:01:04,580 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 214 transitions. [2023-11-29 07:01:04,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2023-11-29 07:01:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 214 transitions. [2023-11-29 07:01:04,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-29 07:01:04,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:01:04,588 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:04,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:04,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 07:01:04,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:01:04,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1656513263, now seen corresponding path program 1 times [2023-11-29 07:01:04,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:04,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212144861] [2023-11-29 07:01:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:04,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:04,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:01:04,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [196904621] [2023-11-29 07:01:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:04,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:04,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:04,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:04,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:01:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:05,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 07:01:05,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-29 07:01:05,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212144861] [2023-11-29 07:01:05,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:01:05,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196904621] [2023-11-29 07:01:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196904621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:01:05,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014114045] [2023-11-29 07:01:05,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:05,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:01:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:05,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:01:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:01:05,543 INFO L87 Difference]: Start difference. First operand 132 states and 214 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:01:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:01:05,821 INFO L93 Difference]: Finished difference Result 395 states and 641 transitions. [2023-11-29 07:01:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:01:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 292 [2023-11-29 07:01:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:01:05,828 INFO L225 Difference]: With dead ends: 395 [2023-11-29 07:01:05,828 INFO L226 Difference]: Without dead ends: 264 [2023-11-29 07:01:05,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:01:05,830 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 183 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:01:05,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 826 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:01:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-29 07:01:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 235. [2023-11-29 07:01:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 136 states have (on average 1.4044117647058822) internal successors, (191), 136 states have internal predecessors, (191), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-29 07:01:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 383 transitions. [2023-11-29 07:01:05,892 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 383 transitions. Word has length 292 [2023-11-29 07:01:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:01:05,894 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 383 transitions. [2023-11-29 07:01:05,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:01:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 383 transitions. [2023-11-29 07:01:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-29 07:01:05,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:01:05,900 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:05,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:01:06,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 07:01:06,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:01:06,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2047185223, now seen corresponding path program 1 times [2023-11-29 07:01:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:06,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148208370] [2023-11-29 07:01:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:06,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:06,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:01:06,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572732901] [2023-11-29 07:01:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:06,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:01:06,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:06,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:01:06,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:01:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:06,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 07:01:06,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1997 proven. 96 refuted. 0 times theorem prover too weak. 2419 trivial. 0 not checked. [2023-11-29 07:01:13,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:03:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-29 07:03:23,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:03:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148208370] [2023-11-29 07:03:23,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:03:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572732901] [2023-11-29 07:03:23,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572732901] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 07:03:23,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:03:23,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 29 [2023-11-29 07:03:23,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277187912] [2023-11-29 07:03:23,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:03:23,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 07:03:23,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:03:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 07:03:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=617, Unknown=5, NotChecked=0, Total=812 [2023-11-29 07:03:23,636 INFO L87 Difference]: Start difference. First operand 235 states and 383 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:03:45,010 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse11 (mod c_~var_1_5~0 65536)) (.cse39 (mod c_~var_1_1~0 65536)) (.cse107 (* 65535 c_~var_1_5~0)) (.cse108 (* 65535 c_~var_1_7~0)) (.cse12 (mod c_~var_1_4~0 65536))) (let ((.cse21 (< 56892 .cse12)) (.cse28 (= .cse39 (mod (+ .cse107 c_~var_1_4~0 .cse108) 65536))) (.cse32 (mod (+ .cse107 c_~var_1_4~0) 65536)) (.cse0 (mod c_~var_1_14~0 65536)) (.cse106 (+ .cse11 c_~var_1_11~0)) (.cse105 (mod c_~var_1_16~0 65536)) (.cse49 (mod c_~var_1_7~0 65536)) (.cse58 (+ .cse11 1)) (.cse10 (= (mod c_~last_1_var_1_8~0 256) 0))) (let ((.cse6 (not .cse10)) (.cse8 (< .cse49 .cse58)) (.cse9 (< 65534 .cse49)) (.cse7 (< .cse11 .cse49)) (.cse3 (< 65534 .cse11)) (.cse5 (= .cse39 .cse11)) (.cse81 (or (= .cse32 .cse0) (< .cse106 (+ .cse105 1)))) (.cse56 (= 1 (mod c_~var_1_8~0 256))) (.cse65 (or .cse21 .cse28)) (.cse13 (= .cse39 (mod (+ .cse107 .cse108 56892) 65536))) (.cse34 (+ .cse39 65536)) (.cse30 (+ .cse49 1)) (.cse37 (mod (+ .cse107 56892) 65536)) (.cse20 (< .cse12 56893)) (.cse82 (or (< .cse105 .cse106) (= .cse0 (mod (+ c_~var_1_4~0 (* c_~var_1_16~0 65535) c_~var_1_11~0) 65536))))) (let ((.cse4 (< c_~var_1_13~0 0)) (.cse1 (let ((.cse83 (mod c_~var_1_11~0 4294967296))) (and (or .cse6 (and (or .cse8 .cse9 .cse5 (< .cse83 .cse30)) (or .cse7 (< .cse83 .cse58) .cse3 .cse5))) .cse81 .cse56 (or .cse10 (and .cse65 (or .cse21 (and (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse84 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< v_z_84 0) (< 65535 .cse84) (< .cse83 .cse84) (< .cse84 .cse30) (< 65535 v_z_84)))) (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse85 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< 65535 .cse85) (< (+ v_z_84 .cse32) 65536) (< .cse83 .cse85) (< .cse85 .cse30) (< 65535 v_z_84)))) (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse86 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< 65535 (+ v_z_84 .cse32)) (< v_z_84 0) (< 65535 .cse86) (< .cse83 .cse86) (< .cse86 .cse30)))))) (or .cse13 .cse20 (and (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse87 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse88 (+ v_z_85 .cse32))) (or (< v_z_85 0) (< .cse83 .cse87) (< 65535 .cse88) (< .cse49 .cse87) (< .cse87 0) (= .cse39 .cse88)))) (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse89 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse90 (+ v_z_85 .cse32))) (or (< .cse83 .cse89) (< .cse49 .cse89) (< .cse90 65536) (< .cse89 0) (= .cse90 .cse34) (< 65535 v_z_85)))) (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse91 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse92 (+ v_z_85 .cse32))) (or (< v_z_85 0) (< .cse83 .cse91) (< .cse49 .cse91) (< .cse91 0) (= .cse92 .cse34) (= .cse39 .cse92) (< 65535 v_z_85)))))) (or (and (or .cse13 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse93 (+ v_z_82 .cse37)) (.cse94 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse93) (< 65535 .cse94) (< .cse93 65536) (< 65535 v_z_82) (< .cse83 .cse94) (< .cse94 0))))) (forall ((v_z_82 Int)) (let ((.cse95 (+ v_z_82 .cse37))) (or (= .cse34 .cse95) (< .cse95 65536) (< 65535 v_z_82) (forall ((v_y_82 Int)) (let ((.cse96 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (< 65535 .cse96) (< .cse83 .cse96) (< .cse96 .cse30))))))) (or .cse13 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse97 (+ (* 65536 v_y_82) (* v_z_82 65535))) (.cse98 (+ v_z_82 .cse37))) (or (< 65535 .cse97) (= .cse39 .cse98) (< .cse83 .cse97) (< .cse97 0) (< 65535 .cse98) (< v_z_82 0))))) (forall ((v_z_82 Int)) (let ((.cse99 (+ v_z_82 .cse37))) (or (= .cse39 .cse99) (< 65535 .cse99) (forall ((v_y_82 Int)) (let ((.cse100 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (< 65535 .cse100) (< .cse83 .cse100) (< .cse100 .cse30)))) (< v_z_82 0)))) (or (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse101 (+ v_z_82 .cse37)) (.cse102 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse101) (< 65535 .cse102) (< 65535 v_z_82) (= .cse39 .cse101) (< .cse83 .cse102) (< .cse102 0) (< v_z_82 0)))) .cse13) (forall ((v_z_82 Int)) (let ((.cse103 (+ v_z_82 .cse37))) (or (= .cse34 .cse103) (< 65535 v_z_82) (= .cse39 .cse103) (forall ((v_y_82 Int)) (let ((.cse104 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (< 65535 .cse104) (< .cse83 .cse104) (< .cse104 .cse30)))) (< v_z_82 0))))) .cse20))) .cse82))) (.cse2 (= (mod c_~var_1_9~0 256) 0))) (and (or (< |c_ULTIMATE.start_step_~stepLocal_4~0#1| .cse0) .cse1 .cse2) (or .cse3 .cse4 .cse5) (or (and (or .cse6 (and (or .cse7 .cse3 .cse4 .cse5) (or .cse8 .cse9 .cse4 .cse5))) (or .cse10 (let ((.cse27 (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse54 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse55 (+ v_z_85 .cse32))) (or (< .cse49 .cse54) (< .cse55 65536) (< .cse54 0) (= .cse55 .cse34) (< 65535 v_z_85))))) (.cse25 (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse53 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse52 (+ v_z_85 .cse32))) (or (< v_z_85 0) (< 65535 .cse52) (< .cse49 .cse53) (< .cse53 0) (= .cse39 .cse52))))) (.cse26 (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse50 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse51 (+ v_z_85 .cse32))) (or (< v_z_85 0) (< .cse49 .cse50) (< .cse50 0) (= .cse51 .cse34) (= .cse39 .cse51) (< 65535 v_z_85))))) (.cse17 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse47 (+ v_z_82 .cse37)) (.cse48 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse47) (< 65535 .cse48) (< 65535 v_z_82) (= .cse39 .cse47) (< .cse48 0) (< v_z_82 0))))) (.cse19 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse45 (+ (* 65536 v_y_82) (* v_z_82 65535))) (.cse46 (+ v_z_82 .cse37))) (or (< 65535 .cse45) (= .cse39 .cse46) (< .cse45 .cse30) (< 65535 .cse46) (< v_z_82 0))))) (.cse16 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse43 (+ v_z_82 .cse37)) (.cse44 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse43) (< 65535 .cse44) (< 65535 v_z_82) (= .cse39 .cse43) (< .cse44 .cse30) (< v_z_82 0))))) (.cse15 (forall ((v_y_82 Int) (v_z_82 Int)) (let ((.cse41 (+ v_z_82 .cse37)) (.cse42 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse41) (< 65535 .cse42) (< .cse41 65536) (< 65535 v_z_82) (< .cse42 .cse30))))) (.cse18 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse38 (+ (* 65536 v_y_82) (* v_z_82 65535))) (.cse40 (+ v_z_82 .cse37))) (or (< 65535 .cse38) (= .cse39 .cse40) (< .cse38 0) (< 65535 .cse40) (< v_z_82 0))))) (.cse14 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse35 (+ v_z_82 .cse37)) (.cse36 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse35) (< 65535 .cse36) (< .cse35 65536) (< 65535 v_z_82) (< .cse36 0))))) (.cse22 (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse33 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< 65535 (+ v_z_84 .cse32)) (< v_z_84 0) (< 65535 .cse33) (< .cse33 .cse30))))) (.cse23 (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse31 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< 65535 .cse31) (< (+ v_z_84 .cse32) 65536) (< .cse31 .cse30) (< 65535 v_z_84))))) (.cse24 (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse29 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< v_z_84 0) (< 65535 .cse29) (< .cse29 .cse30) (< 65535 v_z_84)))))) (and (or (< (+ (* 65536 (div (+ (* (- 1) .cse11) .cse12) 65536)) c_~var_1_13~0 .cse11) .cse12) (and (or (and (or .cse13 .cse14) .cse15 .cse16 (or .cse13 .cse17) (or .cse18 .cse13) .cse19) .cse20) (or .cse21 (and .cse22 .cse23 .cse24)) (or .cse13 (and .cse25 .cse26 .cse27) .cse20))) (or .cse13 .cse20 (and (or .cse4 .cse27) (or .cse25 .cse4) (or .cse26 .cse4))) (or .cse21 .cse28 .cse4) (or (and (or .cse13 .cse17 .cse4) (or .cse19 .cse4) (or .cse16 .cse4) (or .cse15 .cse4) (or .cse18 .cse13 .cse4) (or .cse13 .cse14 .cse4)) .cse20) (or .cse21 (and (or .cse22 .cse4) (or .cse23 .cse4) (or .cse4 .cse24)))))) (or .cse56 .cse4)) .cse2) (or (< c_~var_1_13~0 .cse0) .cse1 .cse2) (or .cse10 .cse4) (or (let ((.cse57 (mod c_~var_1_17~0 4294967296))) (and (or .cse6 (and (or .cse7 .cse3 (< .cse57 .cse58) .cse5) (or .cse8 (< .cse57 .cse30) .cse9 .cse5))) (or .cse10 (and (or .cse13 (and (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse59 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse60 (+ v_z_85 .cse32))) (or (< v_z_85 0) (< .cse57 .cse59) (< 65535 .cse60) (< .cse49 .cse59) (< .cse59 0) (= .cse39 .cse60)))) (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse61 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse62 (+ v_z_85 .cse32))) (or (< .cse57 .cse61) (< .cse49 .cse61) (< .cse62 65536) (< .cse61 0) (= .cse62 .cse34) (< 65535 v_z_85)))) (forall ((v_z_85 Int) (v_y_85 Int)) (let ((.cse63 (+ (* 65536 v_y_85) (* v_z_85 65535))) (.cse64 (+ v_z_85 .cse32))) (or (< v_z_85 0) (< .cse57 .cse63) (< .cse49 .cse63) (< .cse63 0) (= .cse64 .cse34) (= .cse39 .cse64) (< 65535 v_z_85))))) .cse20) .cse65 (or .cse21 (and (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse66 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< 65535 .cse66) (< (+ v_z_84 .cse32) 65536) (< .cse57 .cse66) (< .cse66 .cse30) (< 65535 v_z_84)))) (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse67 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< 65535 (+ v_z_84 .cse32)) (< v_z_84 0) (< 65535 .cse67) (< .cse57 .cse67) (< .cse67 .cse30)))) (forall ((v_z_84 Int) (v_y_84 Int)) (let ((.cse68 (+ (* v_z_84 65535) (* 65536 v_y_84)))) (or (< v_z_84 0) (< 65535 .cse68) (< .cse57 .cse68) (< .cse68 .cse30) (< 65535 v_z_84)))))) (or (and (or .cse13 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse69 (+ v_z_82 .cse37)) (.cse70 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse69) (< 65535 .cse70) (< .cse69 65536) (< 65535 v_z_82) (< .cse57 .cse70) (< .cse70 0))))) (forall ((v_z_82 Int)) (let ((.cse71 (+ v_z_82 .cse37))) (or (= .cse34 .cse71) (< .cse71 65536) (< 65535 v_z_82) (forall ((v_y_82 Int)) (let ((.cse72 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (< 65535 .cse72) (< .cse57 .cse72) (< .cse72 .cse30))))))) (or .cse13 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse73 (+ (* 65536 v_y_82) (* v_z_82 65535))) (.cse74 (+ v_z_82 .cse37))) (or (< 65535 .cse73) (< .cse57 .cse73) (= .cse39 .cse74) (< .cse73 0) (< 65535 .cse74) (< v_z_82 0))))) (or .cse13 (forall ((v_z_82 Int) (v_y_82 Int)) (let ((.cse75 (+ v_z_82 .cse37)) (.cse76 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (= .cse34 .cse75) (< 65535 .cse76) (< 65535 v_z_82) (< .cse57 .cse76) (= .cse39 .cse75) (< .cse76 0) (< v_z_82 0))))) (forall ((v_z_82 Int)) (let ((.cse77 (+ v_z_82 .cse37))) (or (= .cse34 .cse77) (< 65535 v_z_82) (= .cse39 .cse77) (forall ((v_y_82 Int)) (let ((.cse78 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (< 65535 .cse78) (< .cse57 .cse78) (< .cse78 .cse30)))) (< v_z_82 0)))) (forall ((v_z_82 Int)) (let ((.cse79 (+ v_z_82 .cse37))) (or (= .cse39 .cse79) (forall ((v_y_82 Int)) (let ((.cse80 (+ (* 65536 v_y_82) (* v_z_82 65535)))) (or (< 65535 .cse80) (< .cse57 .cse80) (< .cse80 .cse30)))) (< 65535 .cse79) (< v_z_82 0))))) .cse20))) .cse81 .cse56 .cse82)) .cse2) (or .cse1 (< |c_ULTIMATE.start_step_#t~ite11#1| .cse0) .cse2)))))) is different from false [2023-11-29 07:03:50,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:03:53,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:04:17,863 WARN L293 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 286 DAG size of output: 284 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:04:21,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:04:37,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:04:38,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:11,085 WARN L293 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 287 DAG size of output: 269 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:05:13,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:17,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:21,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:25,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:43,067 WARN L293 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 219 DAG size of output: 206 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:05:45,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:49,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:51,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:05:55,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:06:00,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:06:38,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:06:43,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:06:44,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:07,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:20,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:27,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:32,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:34,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:36,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:40,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:41,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:45,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:48,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:52,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:56,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:57,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:07:59,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:03,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:06,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:30,008 WARN L293 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 218 DAG size of output: 205 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:08:34,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:38,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:39,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:44,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:48,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:52,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:08:56,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:00,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:04,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:06,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:10,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:14,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:18,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:20,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:24,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:27,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:31,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:09:52,070 WARN L293 SmtUtils]: Spent 9.05s on a formula simplification. DAG size of input: 291 DAG size of output: 289 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:09:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:52,288 INFO L93 Difference]: Finished difference Result 537 states and 846 transitions. [2023-11-29 07:09:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 07:09:52,289 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 293 [2023-11-29 07:09:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:52,294 INFO L225 Difference]: With dead ends: 537 [2023-11-29 07:09:52,295 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 07:09:52,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 271.1s TimeCoverageRelationStatistics Valid=439, Invalid=1999, Unknown=16, NotChecked=96, Total=2550 [2023-11-29 07:09:52,298 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 508 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 29 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 170.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:52,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 2044 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1011 Invalid, 24 Unknown, 25 Unchecked, 170.4s Time] [2023-11-29 07:09:52,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 07:09:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 248. [2023-11-29 07:09:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 149 states have (on average 1.4161073825503356) internal successors, (211), 149 states have internal predecessors, (211), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-29 07:09:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 403 transitions. [2023-11-29 07:09:52,335 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 403 transitions. Word has length 293 [2023-11-29 07:09:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:52,336 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 403 transitions. [2023-11-29 07:09:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:09:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 403 transitions. [2023-11-29 07:09:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-29 07:09:52,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:52,340 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:52,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 07:09:52,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 07:09:52,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:52,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1438435447, now seen corresponding path program 1 times [2023-11-29 07:09:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:52,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576525933] [2023-11-29 07:09:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:52,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:52,581 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:09:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711950372] [2023-11-29 07:09:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:52,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:52,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:52,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:52,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:09:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:52,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:09:52,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2023-11-29 07:09:53,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 24 proven. 117 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked. [2023-11-29 07:09:53,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:53,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576525933] [2023-11-29 07:09:53,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:09:53,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711950372] [2023-11-29 07:09:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711950372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:53,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:09:53,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 07:09:53,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432772258] [2023-11-29 07:09:53,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:53,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:09:53,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:09:53,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:09:53,530 INFO L87 Difference]: Start difference. First operand 248 states and 403 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2023-11-29 07:09:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:53,881 INFO L93 Difference]: Finished difference Result 404 states and 646 transitions. [2023-11-29 07:09:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 07:09:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 293 [2023-11-29 07:09:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:53,885 INFO L225 Difference]: With dead ends: 404 [2023-11-29 07:09:53,885 INFO L226 Difference]: Without dead ends: 260 [2023-11-29 07:09:53,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 578 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:09:53,887 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 159 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:53,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 371 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:09:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-29 07:09:53,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2023-11-29 07:09:53,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 155 states have (on average 1.3870967741935485) internal successors, (215), 155 states have internal predecessors, (215), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-29 07:09:53,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 407 transitions. [2023-11-29 07:09:53,913 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 407 transitions. Word has length 293 [2023-11-29 07:09:53,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:53,914 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 407 transitions. [2023-11-29 07:09:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2023-11-29 07:09:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 407 transitions. [2023-11-29 07:09:53,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-29 07:09:53,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:53,917 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:09:53,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:09:54,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:54,118 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:54,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1530032199, now seen corresponding path program 1 times [2023-11-29 07:09:54,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:54,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738899085] [2023-11-29 07:09:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:54,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:54,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:09:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805636254] [2023-11-29 07:09:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:54,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:54,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:54,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:09:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:54,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 07:09:54,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 2131 proven. 303 refuted. 0 times theorem prover too weak. 2078 trivial. 0 not checked. [2023-11-29 07:09:55,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 102 proven. 312 refuted. 0 times theorem prover too weak. 4098 trivial. 0 not checked. [2023-11-29 07:09:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738899085] [2023-11-29 07:09:57,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:09:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805636254] [2023-11-29 07:09:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805636254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:57,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:09:57,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-29 07:09:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965216051] [2023-11-29 07:09:57,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:57,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 07:09:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:57,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 07:09:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=812, Unknown=0, NotChecked=0, Total=992 [2023-11-29 07:09:57,200 INFO L87 Difference]: Start difference. First operand 256 states and 407 transitions. Second operand has 32 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 7 states have call successors, (85), 4 states have call predecessors, (85), 9 states have return successors, (86), 7 states have call predecessors, (86), 7 states have call successors, (86) [2023-11-29 07:10:01,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:01,591 INFO L93 Difference]: Finished difference Result 555 states and 817 transitions. [2023-11-29 07:10:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 07:10:01,592 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 7 states have call successors, (85), 4 states have call predecessors, (85), 9 states have return successors, (86), 7 states have call predecessors, (86), 7 states have call successors, (86) Word has length 293 [2023-11-29 07:10:01,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:01,594 INFO L225 Difference]: With dead ends: 555 [2023-11-29 07:10:01,594 INFO L226 Difference]: Without dead ends: 407 [2023-11-29 07:10:01,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1343, Invalid=4059, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 07:10:01,597 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1201 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:01,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1291 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 07:10:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-11-29 07:10:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 346. [2023-11-29 07:10:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 228 states have (on average 1.337719298245614) internal successors, (305), 230 states have internal predecessors, (305), 102 states have call successors, (102), 15 states have call predecessors, (102), 15 states have return successors, (102), 100 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 07:10:01,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 509 transitions. [2023-11-29 07:10:01,634 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 509 transitions. Word has length 293 [2023-11-29 07:10:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:01,635 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 509 transitions. [2023-11-29 07:10:01,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.903225806451613) internal successors, (121), 30 states have internal predecessors, (121), 7 states have call successors, (85), 4 states have call predecessors, (85), 9 states have return successors, (86), 7 states have call predecessors, (86), 7 states have call successors, (86) [2023-11-29 07:10:01,635 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 509 transitions. [2023-11-29 07:10:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-29 07:10:01,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:01,638 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:01,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:10:01,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:01,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:01,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:01,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1346120645, now seen corresponding path program 1 times [2023-11-29 07:10:01,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:01,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960910851] [2023-11-29 07:10:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:01,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:01,873 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:01,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390282647] [2023-11-29 07:10:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:01,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:01,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:01,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:01,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:10:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:02,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 07:10:02,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-29 07:10:07,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:07,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960910851] [2023-11-29 07:10:07,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390282647] [2023-11-29 07:10:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390282647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 07:10:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811534884] [2023-11-29 07:10:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:07,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 07:10:07,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:07,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 07:10:07,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:10:07,474 INFO L87 Difference]: Start difference. First operand 346 states and 509 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:10:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:11,895 INFO L93 Difference]: Finished difference Result 959 states and 1387 transitions. [2023-11-29 07:10:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 07:10:11,895 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 293 [2023-11-29 07:10:11,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:11,900 INFO L225 Difference]: With dead ends: 959 [2023-11-29 07:10:11,900 INFO L226 Difference]: Without dead ends: 739 [2023-11-29 07:10:11,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 07:10:11,902 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 488 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:11,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1567 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 07:10:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2023-11-29 07:10:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 520. [2023-11-29 07:10:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 342 states have (on average 1.3128654970760234) internal successors, (449), 346 states have internal predecessors, (449), 154 states have call successors, (154), 23 states have call predecessors, (154), 23 states have return successors, (154), 150 states have call predecessors, (154), 154 states have call successors, (154) [2023-11-29 07:10:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 757 transitions. [2023-11-29 07:10:11,960 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 757 transitions. Word has length 293 [2023-11-29 07:10:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:11,961 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 757 transitions. [2023-11-29 07:10:11,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:10:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 757 transitions. [2023-11-29 07:10:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-29 07:10:11,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:11,963 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:11,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 07:10:12,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:12,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:12,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash -828967621, now seen corresponding path program 1 times [2023-11-29 07:10:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:12,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786370205] [2023-11-29 07:10:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:12,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:12,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405082537] [2023-11-29 07:10:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:12,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:12,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:12,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:12,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:10:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:12,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 07:10:12,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-29 07:10:21,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:21,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786370205] [2023-11-29 07:10:21,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405082537] [2023-11-29 07:10:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405082537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:21,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 07:10:21,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688714462] [2023-11-29 07:10:21,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:21,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 07:10:21,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:21,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 07:10:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:10:21,011 INFO L87 Difference]: Start difference. First operand 520 states and 757 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:10:23,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:23,830 INFO L93 Difference]: Finished difference Result 1079 states and 1559 transitions. [2023-11-29 07:10:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 07:10:23,831 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 293 [2023-11-29 07:10:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:23,835 INFO L225 Difference]: With dead ends: 1079 [2023-11-29 07:10:23,835 INFO L226 Difference]: Without dead ends: 662 [2023-11-29 07:10:23,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=307, Invalid=1175, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 07:10:23,837 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 542 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:23,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1299 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 07:10:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-29 07:10:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 521. [2023-11-29 07:10:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 343 states have (on average 1.3061224489795917) internal successors, (448), 347 states have internal predecessors, (448), 154 states have call successors, (154), 23 states have call predecessors, (154), 23 states have return successors, (154), 150 states have call predecessors, (154), 154 states have call successors, (154) [2023-11-29 07:10:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 756 transitions. [2023-11-29 07:10:23,893 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 756 transitions. Word has length 293 [2023-11-29 07:10:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:23,893 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 756 transitions. [2023-11-29 07:10:23,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:10:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 756 transitions. [2023-11-29 07:10:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-29 07:10:23,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:23,897 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:23,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:10:24,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:24,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:24,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash -335003395, now seen corresponding path program 1 times [2023-11-29 07:10:24,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:24,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185346816] [2023-11-29 07:10:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:24,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:24,127 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:24,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980323545] [2023-11-29 07:10:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:24,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:24,129 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:24,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce2ed299-cc1e-4043-b8d6-4252ed4c7d84/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:10:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:24,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 07:10:24,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 1814 proven. 756 refuted. 0 times theorem prover too weak. 1942 trivial. 0 not checked. [2023-11-29 07:10:36,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:12:05,542 WARN L293 SmtUtils]: Spent 10.09s on a formula simplification. DAG size of input: 290 DAG size of output: 285 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:12:40,759 WARN L293 SmtUtils]: Spent 23.48s on a formula simplification that was a NOOP. DAG size: 274 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:13:07,994 WARN L293 SmtUtils]: Spent 7.42s on a formula simplification that was a NOOP. DAG size: 278 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:13:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2023-11-29 07:13:08,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:13:08,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185346816] [2023-11-29 07:13:08,516 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:13:08,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980323545] [2023-11-29 07:13:08,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980323545] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 07:13:08,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 07:13:08,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [36] total 49 [2023-11-29 07:13:08,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473646879] [2023-11-29 07:13:08,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:13:08,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 07:13:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:13:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 07:13:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1861, Unknown=6, NotChecked=0, Total=2352 [2023-11-29 07:13:08,518 INFO L87 Difference]: Start difference. First operand 521 states and 756 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2023-11-29 07:13:27,513 WARN L293 SmtUtils]: Spent 17.10s on a formula simplification. DAG size of input: 517 DAG size of output: 521 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:13:31,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:13:50,081 WARN L293 SmtUtils]: Spent 14.03s on a formula simplification. DAG size of input: 429 DAG size of output: 429 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:14:14,570 WARN L293 SmtUtils]: Spent 20.26s on a formula simplification. DAG size of input: 504 DAG size of output: 468 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:14:39,086 WARN L293 SmtUtils]: Spent 19.60s on a formula simplification. DAG size of input: 513 DAG size of output: 477 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:14:42,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:15:05,229 WARN L293 SmtUtils]: Spent 17.55s on a formula simplification. DAG size of input: 521 DAG size of output: 525 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:15:30,613 WARN L293 SmtUtils]: Spent 20.22s on a formula simplification. DAG size of input: 516 DAG size of output: 519 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:15:35,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 07:15:55,127 WARN L293 SmtUtils]: Spent 16.35s on a formula simplification that was a NOOP. DAG size: 374 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)